Evidence map›Paper›PMID 34772932›Full record

ArticleNature communications2021

WRN helicase safeguards deprotected replication forks in BRCA2-mutated cancer cells.

Arindam Datta, Kajal Biswas, Joshua A Sommers, Haley Thompson, Sanket Awate, Claudia M Nicolae, Tanay Thakar, George-Lucian Moldovan, Robert H Shoemaker, Shyam K Sharan and 1 more

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.8field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 48 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Novel De NovoInternational journal of molecular sciences · 2025
    Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. A new wave of innovations within the DNA damage response.Signal transduction and targeted therapy · 2023
    Review
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 3 institutions in 1 country.

Arindam DattaTranslational Gerontology Branch, National Institute on Aging, NIH, Baltimore, MD, 21224, USA.
Kajal BiswasMouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute, NIH, Frederick, MD, 21702, USA.
Joshua A SommersTranslational Gerontology Branch, National Institute on Aging, NIH, Baltimore, MD, 21224, USA.ORCID http://orcid.org/0000-0003-0859-6286
Haley ThompsonTranslational Gerontology Branch, National Institute on Aging, NIH, Baltimore, MD, 21224, USA.
Sanket AwateTranslational Gerontology Branch, National Institute on Aging, NIH, Baltimore, MD, 21224, USA.
Claudia M NicolaeDepartment of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA, 17033, USA.ORCID http://orcid.org/0000-0003-4933-5496
Tanay ThakarDepartment of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA, 17033, USA.ORCID http://orcid.org/0000-0001-5261-458X
George-Lucian MoldovanDepartment of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA, 17033, USA.ORCID http://orcid.org/0000-0003-3825-149X
Robert H ShoemakerChemopreventive Agent Development Research Group, Division of Cancer Prevention, National Cancer Institute, NIH, Rockville, MD, 20850, USA.
Shyam K SharanMouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute, NIH, Frederick, MD, 21702, USA.ORCID http://orcid.org/0000-0002-9333-870X
Robert M BroshTranslational Gerontology Branch, National Institute on Aging, NIH, Baltimore, MD, 21224, USA. broshr@mail.nih.gov.ORCID http://orcid.org/0000-0003-2676-4327
National Institute on Aging · USNational Cancer Institute · USPennsylvania State University · US

Funding

Roles Of DNA Helicases In Pathways Required For Maintenance Of Genomic StabilityZIAAG000741 · NIA · NATIONAL INSTITUTE ON AGING · PI BROSH, ROBERT · 2009 to 2025
$7.6M
The Role of Mono-ADP-Ribosylation by PARP14 in RadioresistanceR01ES026184 · NIEHS · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI George Lucian Moldovan · 2016 to 2026
$3.6M
Intramural NIH HHS ZIA AG000741NIEHS NIH HHS R01 ES026184
6 · The paper itself

Abstract

The tumor suppressor BRCA2 protects stalled forks from degradation to maintain genome stability. However, the molecular mechanism(s) whereby unprotected forks are stabilized remains to be fully characterized. Here, we demonstrate that WRN helicase ensures efficient restart and limits excessive degradation of stalled forks in BRCA2-deficient cancer cells. In vitro, WRN ATPase/helicase catalyzes fork restoration and curtails MRE11 nuclease activity on regressed forks. We show that WRN helicase inhibitor traps WRN on chromatin leading to rapid fork stalling and nucleolytic degradation of unprotected forks by MRE11, resulting in MUS81-dependent double-strand breaks, elevated non-homologous end-joining and chromosomal instability. WRN helicase inhibition reduces viability of BRCA2-deficient cells and potentiates cytotoxicity of a poly (ADP)ribose polymerase (PARP) inhibitor. Furthermore, BRCA2-deficient xenograft tumors in mice exhibited increased DNA damage and growth inhibition when treated with WRN helicase inhibitor. This work provides mechanistic insight into stalled fork stabilization by WRN helicase when BRCA2 is deficient.

Indexed as

AnimalsBRCA2 ProteinCell Line, TumorDNA DamageDNA HelicasesDNA ReplicationFemaleGenomic InstabilityHeterograftsMiceMice, NudeMRE11 Homologue ProteinNeoplasmsPoly (ADP-Ribose) Polymerase-1Poly(ADP-ribose) Polymerase InhibitorsWerner Syndrome HelicaseBRCA2 ProteinBRCA2 protein, mouseDNA HelicasesMre11a protein, mouseMRE11 Homologue ProteinParp1 protein, mousePoly (ADP-Ribose) Polymerase-1Poly(ADP-ribose) Polymerase InhibitorsWerner Syndrome HelicaseWrn protein, mouse

Identifiers

PMID34772932
PMCPMC8590011
OpenAlexW3211556362

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.